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Re: [Land-speed] Tires,Mileage,etc/non LSR ?

To: "Jon Wennerberg" <jonwennerberg@nancyandjon.org>, "DR MAYF"
Subject: Re: [Land-speed] Tires,Mileage,etc/non LSR ?
From: "Adin, David" <DavidAdin@mercydurango.org>
Date: Mon, 21 Jul 2008 13:29:05 -0600
Vee-hickle:  97 MKVIII LSC  (that means the short 3.27 gears) 4.6 4valve
motor, 4 speed AOD, a little bigger than mustang sized and heavy. 70 mph
is about 2100rpm.

This bugly car has two mileage modes: accumulated and instantaneous.
According to the book, the mileage is figured by flow - I checked the
first tank and it was within +/- 1 mpg fwiw.

I have learned that cruise control is about 2-4 mpg LESS than my foot
(barring any fun)

Last trip: 1100 miles round trip Durango (6600') to Las Vegas (1800') -
going "down" to vegas into the wind (70mph) 29 mpg.  Coming up to
durango with the wind = 30 mpg.  I believe in the flats w/ no wind @
60mph I could achieve 35 mpg!

It is interesting to watch the instantaneous readout while driving (no
cell phone or text thingie to play with) - very often I can back out of
the throttle, maintain speed and pick up 2-4 mpg!  Of course eventually
I lose momentum though . . .

Note: good to see the posts with documented results.

David, waiting for just one more "jackrabbit" start! (4mpg)

-----Original Message-----
From: land-speed-bounces+davidadin=mercydurango.org@autox.team.net
[mailto:land-speed-bounces+davidadin=mercydurango.org@autox.team.net] On
Behalf Of Jon Wennerberg
Sent: Monday, July 21, 2008 1:12 PM
To: DR MAYF; land-speed submit
Subject: Re: [Land-speed] Tires,Mileage,etc/non LSR ?

On Jul 21, 2008, at 3:01 PM, drmayf wrote:

Tom, Ed, all..


mayf



Speaking to something that Ed mentioned a few posts ago -- the fuel
computer display built into the dashboard.  On my '04 GMC pickup
there's one of the computers, and I've checked the accuracy -- only
to find it's a bit generous (when compared to my figuring of fuel
economy).  A couple of mpg too generous, in fact.  The 'puter might
show 25.4 mpg on a road trip -- and when I figure the number of
gallons burned and the number of miles driven (using the readouts
from the fuel stations and the corrected mileage shown on the
odometer ) I'll get something like 23.9 mpg.  These numbers are close
to the real world for me -- I do get mid-20's in my big pickup -- but
the computer shows even better.

I drive at or below posted speed limits 99% of the time, use the
cruise control as much as is possible, and don't do jackrabbit starts
-- all of which contribute to good mileage.  Again -- YMMV.

Jon Wennerberg
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